import {
  BadRequestException,
  Body,
  Controller,
  Get,
  Param,
  Patch,
  Post,
  Query,
  UploadedFile,
  UseGuards,
  UseInterceptors,
} from '@nestjs/common';
import { ConfigService } from '@nestjs/config';
import { FileInterceptor } from '@nestjs/platform-express';
import { diskStorage } from 'multer';
import { extname } from 'path';
import { JwtAuthGuard } from '../auth/jwt-auth.guard';
import { PermissionsGuard } from '../auth/permissions.guard';
import { RequirePermissions } from '../auth/permissions.decorator';
import { CurrentUser } from '../auth/current-user.decorator';
import {
  IMAGE_MIME,
  PLUGIN_IMAGES_DIR,
  ensureUploadsDirs,
  publicApiBase,
} from '../uploads/uploads.util';
import {
  ApprovePurchaseDto,
  CreateCatalogSettingDto,
  SaveCatalogItemDto,
} from './dto/plugin-store.dto';
import { PluginStoreService } from './plugin-store.service';

@Controller('plugins/store')
@UseGuards(JwtAuthGuard, PermissionsGuard)
export class PluginStoreController {
  constructor(
    private readonly store: PluginStoreService,
    private readonly config: ConfigService,
  ) {}

  @Get('catalog')
  @RequirePermissions('plugins:read')
  catalog() {
    return this.store.listCatalogAdmin();
  }

  @Post('upload-image')
  @RequirePermissions('plugins:write')
  @UseInterceptors(
    FileInterceptor('file', {
      storage: diskStorage({
        destination: (_req, _file, cb) => {
          ensureUploadsDirs();
          cb(null, PLUGIN_IMAGES_DIR);
        },
        filename: (_req, file, cb) => {
          const safeExt = extname(file.originalname).toLowerCase() || '.png';
          const name = `plugin_${Date.now()}_${Math.random().toString(36).slice(2, 8)}${safeExt}`;
          cb(null, name);
        },
      }),
      limits: { fileSize: 2 * 1024 * 1024 },
      fileFilter: (_req, file, cb) => {
        if (!IMAGE_MIME.test(file.mimetype)) {
          cb(new BadRequestException('فقط تصویر (jpg/png/gif/webp/svg) مجاز است') as any, false);
          return;
        }
        cb(null, true);
      },
    }),
  )
  uploadImage(@UploadedFile() file: Express.Multer.File) {
    if (!file) throw new BadRequestException('فایل ارسال نشده است');
    const base = publicApiBase(this.config);
    return { url: `${base}/uploads/plugins/${file.filename}` };
  }

  @Patch('catalog/:id')
  @RequirePermissions('plugins:write')
  saveItem(
    @Param('id') id: string,
    @Body() dto: SaveCatalogItemDto,
    @CurrentUser() user: { id: string },
  ) {
    return this.store.saveCatalogItem(id, dto, user.id);
  }

  @Post('catalog')
  @RequirePermissions('plugins:write')
  createSetting(
    @Body() dto: CreateCatalogSettingDto,
    @CurrentUser() user: { id: string },
  ) {
    return this.store.createCatalogSetting(dto, user.id);
  }

  @Get('requests')
  @RequirePermissions('plugins:read')
  requests(@Query('status') status?: string) {
    return this.store.listRequestsAdmin(status);
  }

  @Post('requests/:id/approve')
  @RequirePermissions('plugins:write')
  approve(
    @Param('id') id: string,
    @Body() dto: ApprovePurchaseDto,
    @CurrentUser() user: { id: string },
  ) {
    return this.store.approveRequest(id, dto, user.id);
  }

  @Post('requests/:id/reject')
  @RequirePermissions('plugins:write')
  reject(@Param('id') id: string, @CurrentUser() user: { id: string }) {
    return this.store.rejectRequest(id, user.id);
  }
}